package org.fall.mvc.config;

import com.atguigu.crowd.entity.Admin;
import com.atguigu.crowd.entity.Role;
import org.fall.service.api.AdminService;
import org.fall.service.api.AuthService;
import org.fall.service.api.RoleService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;

// 也需要扫描入SpringMVC容器，用于自动注入
@Component
public class CrowdUserDetailsService implements UserDetailsService {

    @Autowired
    private AdminService adminService;
    @Autowired
    private RoleService roleService;
    @Autowired
    private AuthService authService;

    @Override
    public UserDetails loadUserByUsername(String s) throws UsernameNotFoundException {
        // 1、根据账号名称查询Admin对象
        Admin admin = adminService.getAdminByLoginAcct(s);

        //2、获取adminId
        Integer adminId = admin.getId();

        //3、根据adminId查询角色信息
        List<Role> assignedRoleList = roleService.getAssignedRoleList(adminId);

        //4、根据adminId查询权限信息
        List<String> authNameList = authService.getAssignedAuthNameByAdminId(adminId);

        //5、创建集合对象用来存储GrantedAuthority（权限信息）
        List<GrantedAuthority> authorities = new ArrayList<>();

        //6、遍历assignedRoleList存入角色信息
        for (Role role : assignedRoleList) {
            //注意：不要忘了加前缀！
            String roleName = "ROLE_" + role.getName();
            SimpleGrantedAuthority simpleGrantedAuthority = new SimpleGrantedAuthority(roleName);
            authorities.add(simpleGrantedAuthority);
        }

        // 7、遍历authNameList存入权限信息
        for (String authName : authNameList) {
            SimpleGrantedAuthority simpleGrantedAuthority = new SimpleGrantedAuthority(authName);
            authorities.add(simpleGrantedAuthority);
        }

        // 8、封装SecurityAdmin对象
        SecurityAdmin securityAdmin = new SecurityAdmin(admin, authorities);

        // 返回SecurityAdmin对象
        return securityAdmin;
    }
}
